Drop your JPG here
or click to browse · also supports paste · JPG / JPEG
Converts on your device — nothing is uploadedConvert JPG to AVIF — Free, Private, In Your Browser
This JPG to AVIF converter turns a JPG image into a next-generation AVIF file without ever uploading it. The conversion runs entirely in your browser, so your image stays on your own device — nothing is sent to a server, nothing is stored, and there is no sign-up, no watermark, and no software to install. AVIF is built on the AV1 compression standard and is one of the most efficient image formats available: at the same visual quality an AVIF is typically 30–50% smaller than JPG, and often smaller than WebP too.
How to Convert JPG to AVIF
- Add your JPG — drag and drop it onto the drop zone, click to browse, or paste from your clipboard. The original appears with its dimensions and file size.
- Set the quality — choose an AVIF quality level. Because AVIF is so efficient, a value of 50–70 usually looks excellent.
- Convert — press Convert to AVIF. The image is encoded locally (AVIF encoding takes a moment) and the new, smaller file size appears beside the original.
- Download — press Download AVIF to save the file. Move the quality slider and the preview updates.
What Is AVIF, and Why Use It?
AVIF (AV1 Image File Format) is a modern, royalty-free image format derived from the AV1 video codec. It is the open cousin of Apple’s HEIC and pushes compression further than both JPG and WebP. Its advantages:
- Smaller files — typically 30–50% smaller than JPG at the same quality, so pages load faster and use less bandwidth.
- Better Core Web Vitals — smaller images improve Largest Contentful Paint (LCP), which helps user experience and SEO.
- More than JPG can do — AVIF supports alpha transparency, HDR, 10–12 bit color depth and wide color gamut, none of which JPG offers.
- Great at low bitrates — AVIF holds detail and avoids blocky artifacts even when compressed hard.
Choosing the Right Quality
AVIF is efficient enough that you can usually pick a lower quality number than you would for JPG and still get an excellent-looking image. As a rough guide:
| Quality | Best for |
|---|---|
| 70–90 | Hero images and photography where detail is critical. |
| 50–70 | The sweet spot for most website and blog images. |
| 35–50 | Thumbnails and previews where small size wins. |
| Below 35 | Maximum compression; some softening on close view. |
Watch the file size update as you drag the slider and stop where the preview still looks great to you.
Is AVIF Supported Everywhere?
Displaying AVIF is now broadly supported — Chrome, Firefox, Opera, Edge and recent versions of Safari all render AVIF images, covering the large majority of users. Creating AVIF in the browser is a bit more limited: this converter uses your browser’s own built-in AVIF encoder, which works in Chrome and Edge. If you open it in a browser that cannot encode AVIF yet, the tool tells you clearly and you can switch to Chrome or Edge. On the web, it is good practice to serve AVIF with a JPG or WebP fallback using the HTML <picture> element so every visitor sees an image.
AVIF vs WebP vs JPG
| Feature | JPG | WebP | AVIF |
|---|---|---|---|
| File size | Baseline | ~25–35% smaller | ~30–50% smaller |
| Transparency | No | Yes | Yes |
| HDR / wide color | No | Limited | Yes |
| Encode speed | Fast | Fast | Slower (heavier) |
| Best for | Universal use | Broad web support | Maximum savings |
Is It Safe and Private?
Yes. Because everything happens locally in your browser, your JPG is never uploaded, never copied to a remote server, and never stored after you close the tab. Many online converters send your file to their servers; here there is nothing to delete, because the file never leaves your device.
Frequently Asked Questions
How do I convert a JPG to AVIF?
Add your JPG, set the quality, press Convert to AVIF, then Download AVIF. Everything runs in your browser.
Is this converter free?
Completely free, with no sign-up, no watermark, and no limit on how many images you convert.
Are my images uploaded to a server?
No. Conversion happens entirely in your browser, so your image never leaves your device.
Why convert JPG to AVIF?
AVIF files are typically 30–50% smaller than JPG at the same quality — often smaller than WebP too — giving faster page loads, lower bandwidth and better Core Web Vitals.
Which browsers can create AVIF here?
This tool uses your browser’s built-in AVIF encoder, which works in Chrome and Edge. If your browser cannot encode AVIF, the tool tells you so you can switch.
What quality should I use?
Because AVIF is efficient, 50–70 usually looks excellent. Higher keeps more detail at a larger size; lower shrinks it further.
AVIF or WebP?
AVIF usually compresses better and supports HDR and wide color; WebP encodes faster and has slightly broader creation support. For maximum savings, choose AVIF.